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sysrq: Restore original console_loglevel when sysrq disabled

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The sysrq header line is printed with an increased loglevel
to provide users some positive feedback.

The original loglevel is not restored when the sysrq operation
is disabled. This bug was introduced in 2.6.12 (pre-git-history)
by the commit ("Allow admin to enable only some of the Magic-Sysrq
functions").

Signed-off-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Petr Mladek 2019-01-11 13:45:15 +01:00 committed by Greg Kroah-Hartman
parent 46dd6d779d
commit 075e1a0c50
1 changed files with 1 additions and 0 deletions
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1
drivers/tty/sysrq.c
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@ -553,6 +553,7 @@ void __handle_sysrq(int key, bool check_mask)
op_p->handler(key); op_p->handler(key);
} else { } else {
pr_cont("This sysrq operation is disabled.\n"); pr_cont("This sysrq operation is disabled.\n");
console_loglevel = orig_log_level;
} }
} else { } else {
pr_cont("HELP : "); pr_cont("HELP : ");